-- @testpoint: opengauss关键字system_user(非保留)，作为函数名,部分测试点合理报错

--关键字不带引号-成功
drop function if exists system_user;
create function system_user(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带双引号-成功
drop function if exists "system_user";
create function "system_user"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带单引号-合理报错
drop function if exists 'system_user';
create function 'system_user'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `system_user`;
create function `system_user`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--清理环境
drop function if exists system_user;
drop function if exists "system_user";